ref: 1aefbfa5230fe188417e52674f79a6d5b009a51e
dir: /engine/overworld/clear_variables.asm/
ClearVariablesOnEnterMap: ld a, SCREEN_HEIGHT_PIXELS ld [hWY], a ld [rWY], a xor a ld [H_AUTOBGTRANSFERENABLED], a ld [wStepCounter], a ld [wLoneAttackNo], a ld [hJoyPressed], a ld [hJoyReleased], a ld [hJoyHeld], a ld [wActionResultOrTookBattleTurn], a ld [wUnusedD5A3], a ld hl, wCardKeyDoorY ld [hli], a ld [hl], a ld hl, wWhichTrade ld bc, wStandingOnWarpPadOrHole - wWhichTrade call FillMemory ret